SSC JE Mechanical Engineering 27th Jan 2018 Shift-2

Instructions

For the following questions answer them individually

SSC JE Mechanical Engineering 27th Jan 2018 Shift-2 - Question 131


Which of the following properties are not sufficient to determine the properties of a vapour? 1. Temperature 2. Pressure 3. Dryness fraction 4. Specific volume

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SSC JE Mechanical Engineering 27th Jan 2018 Shift-2 - Question 132


Which equation clearly defines the entropy change during the constant pressure process for a system with m kg of gas at pressure $$P_1$$ , volume $$V_1$$, . temperature $$T_1$$ and entropy $$s_1$$, when heated to state points of pressure $$P_2$$ , volume $$V_2$$, temperature $$T_2$$ and entropy $$s_2$$?

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SSC JE Mechanical Engineering 27th Jan 2018 Shift-2 - Question 133


If the entropy of the universe decreases What is the nature of the process?

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SSC JE Mechanical Engineering 27th Jan 2018 Shift-2 - Question 134


For the given process 1-2-3-4-1 consisting of two isentropic and two isochoric process on a P-V scale.

Which is the CORRECT representation of the above process on a T-S scale?

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SSC JE Mechanical Engineering 27th Jan 2018 Shift-2 - Question 135


Which of the following equation is TRUE for entropy generation ($$\triangle s$$) for an irreversible and reversible process?

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SSC JE Mechanical Engineering 27th Jan 2018 Shift-2 - Question 136


In a Diesel cycle, heat is added ________.

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SSC JE Mechanical Engineering 27th Jan 2018 Shift-2 - Question 137


Which of the following medium is compressed in a supercharger?

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SSC JE Mechanical Engineering 27th Jan 2018 Shift-2 - Question 138


Which equation is the CORRECT representation for the steady flow energy equation for a nozzle?

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SSC JE Mechanical Engineering 27th Jan 2018 Shift-2 - Question 139


If the ratio of the lower absolute temperature is 7/8, then what will the COP of the Carnot refrigerator?

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SSC JE Mechanical Engineering 27th Jan 2018 Shift-2 - Question 140


What is the effect of increasing heat on steam?

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